Portland’s ‘super El Niño’ winter outlook says warm, not dry. That matters for your gutters.

Portland, Ore. — Oct. 26, 2026. Portland’s winter outlook is in, and the headline is warmth. KOIN 6 meteorologist Kelley Bayern’s 2026–27 outlook, updated Monday, leans toward “a wet and warm winter with below-average snowfall in Portland,” driven by one of the strongest El Niño events on record. NOAA’s official winter outlook, released Oct. 15, gives the Pacific Northwest some of the country’s best odds of a warmer-than-average December through February.

Warm sounds easy. For a house, it mostly means the winter arrives as rain instead of snow, and rain does not wait on the roof. It goes straight through the gutters, every storm, all season.

What the forecasters said

Warm, wet and light on snow: the 2026–27 outlook

KOIN’s outlook looks back at the three strongest El Niño winters in modern history, 1982–83, 1997–98 and 2015–16. Snow was all over the map: none in 1982–83, 1.4 inches in 2015–16 and 8.7 inches in 1997–98. Rain was not. “All three super El Niño winters brought near or above-average rainfall to Portland,” the outlook says.

Snow is where El Niño shows up. Since 1970, Portland has averaged about 3.2 inches of snow in El Niño winters, compared with 4.4 inches across all winters and 5 inches in La Niña winters. Of the 20 El Niño winters KOIN analyzed, about 55% had less than 3 inches and about 80% had less than 6.

FOX 12’s Mark Nelsen landed in a similar place in his Oct. 12 breakdown. He wrote that he is “leaning towards wet,” that long periods of cold and snow are unlikely, and that widespread regional flooding is unlikely because more of the storm action heads south into California. He also flagged that recent El Niño winters still produced at least one significant snow or ice event about half the time, usually by mid-January.

The angle most coverage missed

‘Warm winter’ is a rain forecast for your roof

Most winter coverage is about ski seasons and snow days. For homeowners, the useful part is what happens to the water. When a storm comes in as snow, it sits on the roof and melts slowly. When the same storm comes in as rain at 45 degrees, it all moves through the gutters within minutes. A warm winter puts every storm through the same outlets and downspouts, with no pauses in between.

Nelsen’s outlook adds a second, very local wrinkle. He expects “a bit more east wind than normal this year in usual spots east metro and Gorge.” The Columbia River Gorge gap wind starts showing up in late October and peaks from November through February, and the east-side metro near the river is fully exposed to it. Wind is what drops branches, cones and needles onto roofs between cleanings, so homes in Gresham, Troutdale, Fairview and Wood Village should expect more debris in their gutters this winter, not less.

What to do

A short winter checklist for a warm, wet El Niño

1. 01

   Clean once the big leaf drop is done

   Maples and oaks finish in November. A cleaning after that clears the heaviest load before December’s rain.

2. 02

   Flush every downspout

   Rain-heavy winters punish a half-blocked downspout. Water should reach the ground freely.

3. 03

   Check east-wind exposure

   East metro homes collect wind-blown debris between cleanings. Plan a second check after big wind events.

4. 04

   Keep an ice plan

   A snow or ice event is still possible by mid-January. Gutters already full of water and debris hold more weight when they freeze.

If you live under firs or big maples, a second cleaning in late winter is normal in Portland, and gutter guards matched to your trees can stretch the time between visits. Mild, wet winters also favor moss, which is why many homeowners pair the visit with roof cleaning and moss treatment.

For a price range without a phone call, use the free virtual estimate. You can also book a gutter cleaning online, call (503) 860-6950 or contact the office. East metro homeowners can start at our Gresham gutter services page. Everyone else in the city can start at gutter cleaning in Portland.